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| The Effects of Starvation on Hormone Level and Approximate Composition in Crucian Carp Carassius auratus gibelio |
| ZHU Yao-rong,SHEN Wen-ying,JIN Ye-fei,REN Gang |
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Abstract The levels of triiodothyronine (T3 ) and insulin (INS) in serum and approximate composition in hepatopancreas and muscle were determined in crucian carp Carassius auratus gibelio with initial body weight of(82 .1 ± 4 .5) g starved for 3 ,7 ,14 and 28 days as treatments and fed as control with triplication (20 fish per group ,total of 120 fish) at water temperature of 22~25 ℃ .The results showed that the level of serum T3 was found significant decrease 7 , and 21d after starvation , and the level of serum INS significant decrease 7 ,21 ,28 d after starvation (P< 0 .05) .There were significantly lower glycogen contents in hepatopancreas and muscle 3 ,7 ,and 14 d after starvation than those in the control group (P<0 .05) .There was no significant difference in protein level and moisture in hepatopancreas and muscle in the fed fish and starved fish .The lipid contents in hepatopancreas and muscle were found to be rapidly decreased during starvation (P< 0 .05) .The reduction in serum T3 and INS levels was responsible for reduction in the metabolic rate w hich is the physiological responses for the fish to adapt the stress of starvation .
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Received: 25 December 2013
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